src/gallium/state_trackers/egl/x11/native_dri2.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.8
   4  *
   5  * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #include "util/u_memory.h"
  27 #include "util/u_math.h"
  28 #include "util/u_format.h"
  29 #include "util/u_inlines.h"
  30 #include "util/u_hash_table.h"
  31 #include "pipe/p_compiler.h"
  32 #include "pipe/p_screen.h"
  33 #include "pipe/p_context.h"
  34 #include "pipe/p_state.h"
  35 #include "state_tracker/drm_driver.h"
  36 #include "egllog.h"
  37
  38 #include "native_x11.h"
  39 #include "x11_screen.h"
  40
  41 #include "common/native_helper.h"
  42 #ifdef HAVE_WAYLAND_BACKEND
  43 #include "common/native_wayland_drm_bufmgr_helper.h"
  44 #endif
  45
  46 #ifdef GLX_DIRECT_RENDERING
  47
  48 struct dri2_display {
  49    struct native_display base;
  50    Display *dpy;
  51    boolean own_dpy;
  52
  53    const struct native_event_handler *event_handler;
  54
  55    struct x11_screen *xscr;
  56    int xscr_number;
  57    const char *dri_driver;
  58    int dri_major, dri_minor;
  59
  60    struct dri2_config *configs;
  61    int num_configs;
  62
  63    struct util_hash_table *surfaces;
  64 #ifdef HAVE_WAYLAND_BACKEND
  65    struct wl_drm *wl_server_drm; /* for EGL_WL_bind_wayland_display */
  66 #endif
  67 };
  68
  69 struct dri2_surface {
  70    struct native_surface base;
  71    Drawable drawable;
  72    enum pipe_format color_format;
  73    struct dri2_display *dri2dpy;
  74
  75    unsigned int server_stamp;
  76    unsigned int client_stamp;
  77    int width, height;
  78    struct pipe_resource *textures[NUM_NATIVE_ATTACHMENTS];
  79    uint valid_mask;
  80
  81    boolean have_back, have_fake;
  82
  83    struct x11_drawable_buffer *last_xbufs;
  84    int last_num_xbufs;
  85 };
  86
  87 struct dri2_config {
  88    struct native_config base;
  89 };
  90
  91 static INLINE struct dri2_display *
  92 dri2_display(const struct native_display *ndpy)
  93 {
  94    return (struct dri2_display *) ndpy;
  95 }
  96
  97 static INLINE struct dri2_surface *
  98 dri2_surface(const struct native_surface *nsurf)
  99 {
 100    return (struct dri2_surface *) nsurf;
 101 }
 102
 103 static INLINE struct dri2_config *
 104 dri2_config(const struct native_config *nconf)
 105 {
 106    return (struct dri2_config *) nconf;
 107 }
 108
 109 /**
 110  * Process the buffers returned by the server.
 111  */
 112 static void
 113 dri2_surface_process_drawable_buffers(struct native_surface *nsurf,
 114                                       struct x11_drawable_buffer *xbufs,
 115                                       int num_xbufs)
 116 {
 117    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 118    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 119    struct pipe_resource templ;
 120    struct winsys_handle whandle;
 121    uint valid_mask;
 122    int i;
 123
 124    /* free the old textures */
 125    for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++)
 126       pipe_resource_reference(&dri2surf->textures[i], NULL);
 127    dri2surf->valid_mask = 0x0;
 128
 129    dri2surf->have_back = FALSE;
 130    dri2surf->have_fake = FALSE;
 131
 132    if (!xbufs)
 133       return;
 134
 135    memset(&templ, 0, sizeof(templ));
 136    templ.target = PIPE_TEXTURE_2D;
 137    templ.last_level = 0;
 138    templ.width0 = dri2surf->width;
 139    templ.height0 = dri2surf->height;
 140    templ.depth0 = 1;
 141    templ.array_size = 1;
 142    templ.format = dri2surf->color_format;
 143    templ.bind = PIPE_BIND_RENDER_TARGET;
 144
 145    valid_mask = 0x0;
 146    for (i = 0; i < num_xbufs; i++) {
 147       struct x11_drawable_buffer *xbuf = &xbufs[i];
 148       const char *desc;
 149       enum native_attachment natt;
 150
 151       switch (xbuf->attachment) {
 152       case DRI2BufferFrontLeft:
 153          natt = NATIVE_ATTACHMENT_FRONT_LEFT;
 154          desc = "DRI2 Front Buffer";
 155          break;
 156       case DRI2BufferFakeFrontLeft:
 157          natt = NATIVE_ATTACHMENT_FRONT_LEFT;
 158          desc = "DRI2 Fake Front Buffer";
 159          dri2surf->have_fake = TRUE;
 160          break;
 161       case DRI2BufferBackLeft:
 162          natt = NATIVE_ATTACHMENT_BACK_LEFT;
 163          desc = "DRI2 Back Buffer";
 164          dri2surf->have_back = TRUE;
 165          break;
 166       default:
 167          desc = NULL;
 168          break;
 169       }
 170
 171       if (!desc || dri2surf->textures[natt]) {
 172          if (!desc)
 173             _eglLog(_EGL_WARNING, "unknown buffer %d", xbuf->attachment);
 174          else
 175             _eglLog(_EGL_WARNING, "both real and fake front buffers are listed");
 176          continue;
 177       }
 178
 179       memset(&whandle, 0, sizeof(whandle));
 180       whandle.stride = xbuf->pitch;
 181       whandle.handle = xbuf->name;
 182       dri2surf->textures[natt] = dri2dpy->base.screen->resource_from_handle(
 183          dri2dpy->base.screen, &templ, &whandle);
 184       if (dri2surf->textures[natt])
 185          valid_mask |= 1 << natt;
 186    }
 187
 188    dri2surf->valid_mask = valid_mask;
 189 }
 190
 191 /**
 192  * Get the buffers from the server.
 193  */
 194 static void
 195 dri2_surface_get_buffers(struct native_surface *nsurf, uint buffer_mask)
 196 {
 197    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 198    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 199    unsigned int dri2atts[NUM_NATIVE_ATTACHMENTS * 2];
 200    int num_ins, num_outs, att;
 201    struct x11_drawable_buffer *xbufs;
 202    uint bpp = util_format_get_blocksizebits(dri2surf->color_format);
 203    boolean with_format = FALSE; /* never ask for depth/stencil */
 204
 205    /* We must get the front on servers which doesn't support with format
 206     * due to a silly bug in core dri2. You can't copy to/from a buffer
 207     * that you haven't requested and you recive BadValue errors */
 208    if (dri2surf->dri2dpy->dri_minor < 1) {
 209       with_format = FALSE;
 210       buffer_mask |= (1 << NATIVE_ATTACHMENT_FRONT_LEFT);
 211    }
 212
 213    /* prepare the attachments */
 214    num_ins = 0;
 215    for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
 216       if (native_attachment_mask_test(buffer_mask, att)) {
 217          unsigned int dri2att;
 218
 219          switch (att) {
 220          case NATIVE_ATTACHMENT_FRONT_LEFT:
 221             dri2att = DRI2BufferFrontLeft;
 222             break;
 223          case NATIVE_ATTACHMENT_BACK_LEFT:
 224             dri2att = DRI2BufferBackLeft;
 225             break;
 226          case NATIVE_ATTACHMENT_FRONT_RIGHT:
 227             dri2att = DRI2BufferFrontRight;
 228             break;
 229          case NATIVE_ATTACHMENT_BACK_RIGHT:
 230             dri2att = DRI2BufferBackRight;
 231             break;
 232          default:
 233             assert(0);
 234             dri2att = 0;
 235             break;
 236          }
 237
 238          dri2atts[num_ins++] = dri2att;
 239          if (with_format)
 240             dri2atts[num_ins++] = bpp;
 241       }
 242    }
 243    if (with_format)
 244       num_ins /= 2;
 245
 246    xbufs = x11_drawable_get_buffers(dri2dpy->xscr, dri2surf->drawable,
 247                                     &dri2surf->width, &dri2surf->height,
 248                                     dri2atts, with_format, num_ins, &num_outs);
 249
 250    /* we should be able to do better... */
 251    if (xbufs && dri2surf->last_num_xbufs == num_outs &&
 252        memcmp(dri2surf->last_xbufs, xbufs, sizeof(*xbufs) * num_outs) == 0) {
 253       FREE(xbufs);
 254       dri2surf->client_stamp = dri2surf->server_stamp;
 255       return;
 256    }
 257
 258    dri2_surface_process_drawable_buffers(&dri2surf->base, xbufs, num_outs);
 259
 260    dri2surf->server_stamp++;
 261    dri2surf->client_stamp = dri2surf->server_stamp;
 262
 263    if (dri2surf->last_xbufs)
 264       FREE(dri2surf->last_xbufs);
 265    dri2surf->last_xbufs = xbufs;
 266    dri2surf->last_num_xbufs = num_outs;
 267 }
 268
 269 /**
 270  * Update the buffers of the surface.  This is a slow function due to the
 271  * round-trip to the server.
 272  */
 273 static boolean
 274 dri2_surface_update_buffers(struct native_surface *nsurf, uint buffer_mask)
 275 {
 276    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 277
 278    dri2_surface_get_buffers(&dri2surf->base, buffer_mask);
 279
 280    return ((dri2surf->valid_mask & buffer_mask) == buffer_mask);
 281 }
 282
 283 /**
 284  * Return TRUE if the surface receives DRI2_InvalidateBuffers events.
 285  */
 286 static INLINE boolean
 287 dri2_surface_receive_events(struct native_surface *nsurf)
 288 {
 289    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 290    return (dri2surf->dri2dpy->dri_minor >= 3);
 291 }
 292
 293 static boolean
 294 dri2_surface_flush_frontbuffer(struct native_surface *nsurf)
 295 {
 296    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 297    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 298
 299    /* copy to real front buffer */
 300    if (dri2surf->have_fake)
 301       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 302             0, 0, dri2surf->width, dri2surf->height,
 303             DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 304
 305    /* force buffers to be updated in next validation call */
 306    if (!dri2_surface_receive_events(&dri2surf->base)) {
 307       dri2surf->server_stamp++;
 308       dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
 309             &dri2surf->base, dri2surf->server_stamp);
 310    }
 311
 312    return TRUE;
 313 }
 314
 315 static boolean
 316 dri2_surface_swap_buffers(struct native_surface *nsurf)
 317 {
 318    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 319    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 320
 321    /* copy to front buffer */
 322    if (dri2surf->have_back)
 323       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 324             0, 0, dri2surf->width, dri2surf->height,
 325             DRI2BufferBackLeft, DRI2BufferFrontLeft);
 326
 327    /* and update fake front buffer */
 328    if (dri2surf->have_fake)
 329       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 330             0, 0, dri2surf->width, dri2surf->height,
 331             DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 332
 333    /* force buffers to be updated in next validation call */
 334    if (!dri2_surface_receive_events(&dri2surf->base)) {
 335       dri2surf->server_stamp++;
 336       dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
 337             &dri2surf->base, dri2surf->server_stamp);
 338    }
 339
 340    return TRUE;
 341 }
 342
 343 static boolean
 344 dri2_surface_present(struct native_surface *nsurf,
 345                      enum native_attachment natt,
 346                      boolean preserve,
 347                      uint swap_interval)
 348 {
 349    boolean ret;
 350
 351    if (swap_interval)
 352       return FALSE;
 353
 354    switch (natt) {
 355    case NATIVE_ATTACHMENT_FRONT_LEFT:
 356       ret = dri2_surface_flush_frontbuffer(nsurf);
 357       break;
 358    case NATIVE_ATTACHMENT_BACK_LEFT:
 359       ret = dri2_surface_swap_buffers(nsurf);
 360       break;
 361    default:
 362       ret = FALSE;
 363       break;
 364    }
 365
 366    return ret;
 367 }
 368
 369 static boolean
 370 dri2_surface_validate(struct native_surface *nsurf, uint attachment_mask,
 371                       unsigned int *seq_num, struct pipe_resource **textures,
 372                       int *width, int *height)
 373 {
 374    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 375
 376    if (dri2surf->server_stamp != dri2surf->client_stamp ||
 377        (dri2surf->valid_mask & attachment_mask) != attachment_mask) {
 378       if (!dri2_surface_update_buffers(&dri2surf->base, attachment_mask))
 379          return FALSE;
 380    }
 381
 382    if (seq_num)
 383       *seq_num = dri2surf->client_stamp;
 384
 385    if (textures) {
 386       int att;
 387       for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
 388          if (native_attachment_mask_test(attachment_mask, att)) {
 389             struct pipe_resource *ptex = dri2surf->textures[att];
 390
 391             textures[att] = NULL;
 392             pipe_resource_reference(&textures[att], ptex);
 393          }
 394       }
 395    }
 396
 397    if (width)
 398       *width = dri2surf->width;
 399    if (height)
 400       *height = dri2surf->height;
 401
 402    return TRUE;
 403 }
 404
 405 static void
 406 dri2_surface_wait(struct native_surface *nsurf)
 407 {
 408    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 409    struct dri2_display *dri2dpy = dri2surf->dri2dpy;
 410
 411    if (dri2surf->have_fake) {
 412       x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
 413             0, 0, dri2surf->width, dri2surf->height,
 414             DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 415    }
 416 }
 417
 418 static void
 419 dri2_surface_destroy(struct native_surface *nsurf)
 420 {
 421    struct dri2_surface *dri2surf = dri2_surface(nsurf);
 422    int i;
 423
 424    if (dri2surf->last_xbufs)
 425       FREE(dri2surf->last_xbufs);
 426
 427    for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
 428       struct pipe_resource *ptex = dri2surf->textures[i];
 429       pipe_resource_reference(&ptex, NULL);
 430    }
 431
 432    if (dri2surf->drawable) {
 433       x11_drawable_enable_dri2(dri2surf->dri2dpy->xscr,
 434             dri2surf->drawable, FALSE);
 435
 436       util_hash_table_remove(dri2surf->dri2dpy->surfaces,
 437             (void *) dri2surf->drawable);
 438    }
 439    FREE(dri2surf);
 440 }
 441
 442 static struct dri2_surface *
 443 dri2_display_create_surface(struct native_display *ndpy,
 444                             Drawable drawable,
 445                             enum pipe_format color_format)
 446 {
 447    struct dri2_display *dri2dpy = dri2_display(ndpy);
 448    struct dri2_surface *dri2surf;
 449
 450    dri2surf = CALLOC_STRUCT(dri2_surface);
 451    if (!dri2surf)
 452       return NULL;
 453
 454    dri2surf->dri2dpy = dri2dpy;
 455    dri2surf->drawable = drawable;
 456    dri2surf->color_format = color_format;
 457
 458    dri2surf->base.destroy = dri2_surface_destroy;
 459    dri2surf->base.present = dri2_surface_present;
 460    dri2surf->base.validate = dri2_surface_validate;
 461    dri2surf->base.wait = dri2_surface_wait;
 462
 463    if (drawable) {
 464       x11_drawable_enable_dri2(dri2dpy->xscr, drawable, TRUE);
 465       /* initialize the geometry */
 466       dri2_surface_update_buffers(&dri2surf->base, 0x0);
 467
 468       util_hash_table_set(dri2surf->dri2dpy->surfaces,
 469             (void *) dri2surf->drawable, (void *) &dri2surf->base);
 470    }
 471
 472    return dri2surf;
 473 }
 474
 475 static struct native_surface *
 476 dri2_display_create_window_surface(struct native_display *ndpy,
 477                                    EGLNativeWindowType win,
 478                                    const struct native_config *nconf)
 479 {
 480    struct dri2_surface *dri2surf;
 481
 482    dri2surf = dri2_display_create_surface(ndpy,
 483          (Drawable) win, nconf->color_format);
 484    return (dri2surf) ? &dri2surf->base : NULL;
 485 }
 486
 487 static struct native_surface *
 488 dri2_display_create_pixmap_surface(struct native_display *ndpy,
 489                                    EGLNativePixmapType pix,
 490                                    const struct native_config *nconf)
 491 {
 492    struct dri2_surface *dri2surf;
 493
 494    if (!nconf) {
 495       struct dri2_display *dri2dpy = dri2_display(ndpy);
 496       uint depth, nconf_depth;
 497       int i;
 498
 499       depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
 500       for (i = 0; i < dri2dpy->num_configs; i++) {
 501          nconf_depth = util_format_get_blocksizebits(
 502                dri2dpy->configs[i].base.color_format);
 503          /* simple depth match for now */
 504          if (depth == nconf_depth ||
 505              (depth == 24 && depth + 8 == nconf_depth)) {
 506             nconf = &dri2dpy->configs[i].base;
 507             break;
 508          }
 509       }
 510
 511       if (!nconf)
 512          return NULL;
 513    }
 514
 515    dri2surf = dri2_display_create_surface(ndpy,
 516          (Drawable) pix, nconf->color_format);
 517    return (dri2surf) ? &dri2surf->base : NULL;
 518 }
 519
 520 static int
 521 choose_color_format(const __GLcontextModes *mode, enum pipe_format formats[32])
 522 {
 523    int count = 0;
 524
 525    switch (mode->rgbBits) {
 526    case 32:
 527       formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
 528       formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
 529       break;
 530    case 24:
 531       formats[count++] = PIPE_FORMAT_B8G8R8X8_UNORM;
 532       formats[count++] = PIPE_FORMAT_X8R8G8B8_UNORM;
 533       formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
 534       formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
 535       break;
 536    case 16:
 537       formats[count++] = PIPE_FORMAT_B5G6R5_UNORM;
 538       break;
 539    default:
 540       break;
 541    }
 542
 543    return count;
 544 }
 545
 546 static boolean
 547 is_format_supported(struct pipe_screen *screen,
 548                     enum pipe_format fmt, unsigned sample_count, boolean is_color)
 549 {
 550    return screen->is_format_supported(screen, fmt, PIPE_TEXTURE_2D, sample_count,
 551          (is_color) ? PIPE_BIND_RENDER_TARGET :
 552          PIPE_BIND_DEPTH_STENCIL);
 553 }
 554
 555 static boolean
 556 dri2_display_convert_config(struct native_display *ndpy,
 557                             const __GLcontextModes *mode,
 558                             struct native_config *nconf)
 559 {
 560    enum pipe_format formats[32];
 561    int num_formats, i;
 562    int sample_count = 0;
 563
 564    if (!(mode->renderType & GLX_RGBA_BIT) || !mode->rgbMode)
 565       return FALSE;
 566
 567    /* only interested in native renderable configs */
 568    if (!mode->xRenderable || !mode->drawableType)
 569       return FALSE;
 570
 571    /* fast/slow configs are probably not relevant */
 572    if (mode->visualRating == GLX_SLOW_CONFIG)
 573       return FALSE;
 574
 575    nconf->buffer_mask = 1 << NATIVE_ATTACHMENT_FRONT_LEFT;
 576    if (mode->doubleBufferMode)
 577       nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_BACK_LEFT;
 578    if (mode->stereoMode) {
 579       nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_FRONT_RIGHT;
 580       if (mode->doubleBufferMode)
 581          nconf->buffer_mask |= 1 << NATIVE_ATTACHMENT_BACK_RIGHT;
 582    }
 583
 584    /* choose color format */
 585    num_formats = choose_color_format(mode, formats);
 586    for (i = 0; i < num_formats; i++) {
 587       if (is_format_supported(ndpy->screen, formats[i], sample_count, TRUE)) {
 588          nconf->color_format = formats[i];
 589          break;
 590       }
 591    }
 592    if (nconf->color_format == PIPE_FORMAT_NONE)
 593       return FALSE;
 594
 595    if ((mode->drawableType & GLX_WINDOW_BIT) && mode->visualID)
 596       nconf->window_bit = TRUE;
 597    if (mode->drawableType & GLX_PIXMAP_BIT)
 598       nconf->pixmap_bit = TRUE;
 599
 600    nconf->native_visual_id = mode->visualID;
 601    switch (mode->visualType) {
 602    case GLX_TRUE_COLOR:
 603       nconf->native_visual_type = TrueColor;
 604       break;
 605    case GLX_DIRECT_COLOR:
 606       nconf->native_visual_type = DirectColor;
 607       break;
 608    case GLX_PSEUDO_COLOR:
 609       nconf->native_visual_type = PseudoColor;
 610       break;
 611    case GLX_STATIC_COLOR:
 612       nconf->native_visual_type = StaticColor;
 613       break;
 614    case GLX_GRAY_SCALE:
 615       nconf->native_visual_type = GrayScale;
 616       break;
 617    case GLX_STATIC_GRAY:
 618       nconf->native_visual_type = StaticGray;
 619       break;
 620    }
 621    nconf->level = mode->level;
 622
 623    if (mode->transparentPixel == GLX_TRANSPARENT_RGB) {
 624       nconf->transparent_rgb = TRUE;
 625       nconf->transparent_rgb_values[0] = mode->transparentRed;
 626       nconf->transparent_rgb_values[1] = mode->transparentGreen;
 627       nconf->transparent_rgb_values[2] = mode->transparentBlue;
 628    }
 629
 630    return TRUE;
 631 }
 632
 633 static const struct native_config **
 634 dri2_display_get_configs(struct native_display *ndpy, int *num_configs)
 635 {
 636    struct dri2_display *dri2dpy = dri2_display(ndpy);
 637    const struct native_config **configs;
 638    int i;
 639
 640    /* first time */
 641    if (!dri2dpy->configs) {
 642       const __GLcontextModes *modes;
 643       int num_modes, count;
 644
 645       modes = x11_screen_get_glx_configs(dri2dpy->xscr);
 646       if (!modes)
 647          return NULL;
 648       num_modes = x11_context_modes_count(modes);
 649
 650       dri2dpy->configs = CALLOC(num_modes, sizeof(*dri2dpy->configs));
 651       if (!dri2dpy->configs)
 652          return NULL;
 653
 654       count = 0;
 655       for (i = 0; i < num_modes; i++) {
 656          struct native_config *nconf = &dri2dpy->configs[count].base;
 657
 658          if (dri2_display_convert_config(&dri2dpy->base, modes, nconf)) {
 659             int j;
 660             /* look for duplicates */
 661             for (j = 0; j < count; j++) {
 662                if (memcmp(&dri2dpy->configs[j], nconf, sizeof(*nconf)) == 0)
 663                   break;
 664             }
 665             if (j == count)
 666                count++;
 667          }
 668          modes = modes->next;
 669       }
 670
 671       dri2dpy->num_configs = count;
 672    }
 673
 674    configs = MALLOC(dri2dpy->num_configs * sizeof(*configs));
 675    if (configs) {
 676       for (i = 0; i < dri2dpy->num_configs; i++)
 677          configs[i] = (const struct native_config *) &dri2dpy->configs[i];
 678       if (num_configs)
 679          *num_configs = dri2dpy->num_configs;
 680    }
 681
 682    return configs;
 683 }
 684
 685 static boolean
 686 dri2_display_get_pixmap_format(struct native_display *ndpy,
 687                                EGLNativePixmapType pix,
 688                                enum pipe_format *format)
 689 {
 690    struct dri2_display *dri2dpy = dri2_display(ndpy);
 691    boolean ret = EGL_TRUE;
 692    uint depth;
 693
 694    depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
 695    switch (depth) {
 696    case 32:
 697    case 24:
 698       *format = PIPE_FORMAT_B8G8R8A8_UNORM;
 699       break;
 700    case 16:
 701       *format = PIPE_FORMAT_B5G6R5_UNORM;
 702       break;
 703    default:
 704       *format = PIPE_FORMAT_NONE;
 705       ret = EGL_FALSE;
 706       break;
 707    }
 708
 709    return ret;
 710 }
 711
 712 static int
 713 dri2_display_get_param(struct native_display *ndpy,
 714                        enum native_param_type param)
 715 {
 716    int val;
 717
 718    switch (param) {
 719    case NATIVE_PARAM_USE_NATIVE_BUFFER:
 720       /* DRI2GetBuffers uses the native buffers */
 721       val = TRUE;
 722       break;
 723    case NATIVE_PARAM_PRESERVE_BUFFER:
 724       /* DRI2CopyRegion is used */
 725       val = TRUE;
 726       break;
 727    case NATIVE_PARAM_MAX_SWAP_INTERVAL:
 728    default:
 729       val = 0;
 730       break;
 731    }
 732
 733    return val;
 734 }
 735
 736 static void
 737 dri2_display_destroy(struct native_display *ndpy)
 738 {
 739    struct dri2_display *dri2dpy = dri2_display(ndpy);
 740
 741    if (dri2dpy->configs)
 742       FREE(dri2dpy->configs);
 743
 744    if (dri2dpy->base.screen)
 745       dri2dpy->base.screen->destroy(dri2dpy->base.screen);
 746
 747    if (dri2dpy->surfaces)
 748       util_hash_table_destroy(dri2dpy->surfaces);
 749
 750    if (dri2dpy->xscr)
 751       x11_screen_destroy(dri2dpy->xscr);
 752    if (dri2dpy->own_dpy)
 753       XCloseDisplay(dri2dpy->dpy);
 754    FREE(dri2dpy);
 755 }
 756
 757 static void
 758 dri2_display_invalidate_buffers(struct x11_screen *xscr, Drawable drawable,
 759                                 void *user_data)
 760 {
 761    struct native_display *ndpy = (struct native_display* ) user_data;
 762    struct dri2_display *dri2dpy = dri2_display(ndpy);
 763    struct native_surface *nsurf;
 764    struct dri2_surface *dri2surf;
 765
 766    nsurf = (struct native_surface *)
 767       util_hash_table_get(dri2dpy->surfaces, (void *) drawable);
 768    if (!nsurf)
 769       return;
 770
 771    dri2surf = dri2_surface(nsurf);
 772
 773    dri2surf->server_stamp++;
 774    dri2dpy->event_handler->invalid_surface(&dri2dpy->base,
 775          &dri2surf->base, dri2surf->server_stamp);
 776 }
 777
 778 /**
 779  * Initialize DRI2 and pipe screen.
 780  */
 781 static boolean
 782 dri2_display_init_screen(struct native_display *ndpy)
 783 {
 784    struct dri2_display *dri2dpy = dri2_display(ndpy);
 785    int fd;
 786
 787    if (!x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_DRI2) ||
 788        !x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_GLX)) {
 789       _eglLog(_EGL_WARNING, "GLX/DRI2 is not supported");
 790       return FALSE;
 791    }
 792
 793    dri2dpy->dri_driver = x11_screen_probe_dri2(dri2dpy->xscr,
 794          &dri2dpy->dri_major, &dri2dpy->dri_minor);
 795
 796    fd = x11_screen_enable_dri2(dri2dpy->xscr,
 797          dri2_display_invalidate_buffers, &dri2dpy->base);
 798    if (fd < 0)
 799       return FALSE;
 800
 801    dri2dpy->base.screen =
 802       dri2dpy->event_handler->new_drm_screen(&dri2dpy->base,
 803             dri2dpy->dri_driver, fd);
 804    if (!dri2dpy->base.screen) {
 805       _eglLog(_EGL_DEBUG, "failed to create DRM screen");
 806       return FALSE;
 807    }
 808
 809    return TRUE;
 810 }
 811
 812 static unsigned
 813 dri2_display_hash_table_hash(void *key)
 814 {
 815    XID drawable = pointer_to_uintptr(key);
 816    return (unsigned) drawable;
 817 }
 818
 819 static int
 820 dri2_display_hash_table_compare(void *key1, void *key2)
 821 {
 822    return ((char *) key1 - (char *) key2);
 823 }
 824
 825 static int
 826 dri2_display_authenticate(void *user_data, uint32_t magic)
 827 {
 828    struct native_display *ndpy = user_data;
 829    struct dri2_display *dri2dpy = dri2_display(ndpy);
 830
 831    return x11_screen_authenticate(dri2dpy->xscr, magic);
 832 }
 833
 834 #ifdef HAVE_WAYLAND_BACKEND
 835
 836 static struct wayland_drm_callbacks wl_drm_callbacks = {
 837    dri2_display_authenticate,
 838    egl_g3d_wl_drm_helper_reference_buffer,
 839    egl_g3d_wl_drm_helper_unreference_buffer
 840 };
 841
 842 static boolean
 843 dri2_display_bind_wayland_display(struct native_display *ndpy,
 844                                   struct wl_display *wl_dpy)
 845 {
 846    struct dri2_display *dri2dpy = dri2_display(ndpy);
 847
 848    if (dri2dpy->wl_server_drm)
 849       return FALSE;
 850
 851    dri2dpy->wl_server_drm = wayland_drm_init(wl_dpy,
 852          x11_screen_get_device_name(dri2dpy->xscr),
 853          &wl_drm_callbacks, ndpy);
 854
 855    if (!dri2dpy->wl_server_drm)
 856       return FALSE;
 857
 858    return TRUE;
 859 }
 860
 861 static boolean
 862 dri2_display_unbind_wayland_display(struct native_display *ndpy,
 863                                     struct wl_display *wl_dpy)
 864 {
 865    struct dri2_display *dri2dpy = dri2_display(ndpy);
 866
 867    if (!dri2dpy->wl_server_drm)
 868       return FALSE;
 869
 870    wayland_drm_uninit(dri2dpy->wl_server_drm);
 871    dri2dpy->wl_server_drm = NULL;
 872
 873    return TRUE;
 874 }
 875
 876 static struct native_display_wayland_bufmgr dri2_display_wayland_bufmgr = {
 877    dri2_display_bind_wayland_display,
 878    dri2_display_unbind_wayland_display,
 879    egl_g3d_wl_drm_common_wl_buffer_get_resource
 880 };
 881
 882 #endif /* HAVE_WAYLAND_BACKEND */
 883
 884 struct native_display *
 885 x11_create_dri2_display(Display *dpy,
 886                         const struct native_event_handler *event_handler)
 887 {
 888    struct dri2_display *dri2dpy;
 889
 890    dri2dpy = CALLOC_STRUCT(dri2_display);
 891    if (!dri2dpy)
 892       return NULL;
 893
 894    dri2dpy->event_handler = event_handler;
 895
 896    dri2dpy->dpy = dpy;
 897    if (!dri2dpy->dpy) {
 898       dri2dpy->dpy = XOpenDisplay(NULL);
 899       if (!dri2dpy->dpy) {
 900          dri2_display_destroy(&dri2dpy->base);
 901          return NULL;
 902       }
 903       dri2dpy->own_dpy = TRUE;
 904    }
 905
 906    dri2dpy->xscr_number = DefaultScreen(dri2dpy->dpy);
 907    dri2dpy->xscr = x11_screen_create(dri2dpy->dpy, dri2dpy->xscr_number);
 908    if (!dri2dpy->xscr) {
 909       dri2_display_destroy(&dri2dpy->base);
 910       return NULL;
 911    }
 912
 913    dri2dpy->surfaces = util_hash_table_create(dri2_display_hash_table_hash,
 914          dri2_display_hash_table_compare);
 915    if (!dri2dpy->surfaces) {
 916       dri2_display_destroy(&dri2dpy->base);
 917       return NULL;
 918    }
 919
 920    dri2dpy->base.init_screen = dri2_display_init_screen;
 921    dri2dpy->base.destroy = dri2_display_destroy;
 922    dri2dpy->base.get_param = dri2_display_get_param;
 923    dri2dpy->base.get_configs = dri2_display_get_configs;
 924    dri2dpy->base.get_pixmap_format = dri2_display_get_pixmap_format;
 925    dri2dpy->base.copy_to_pixmap = native_display_copy_to_pixmap;
 926    dri2dpy->base.create_window_surface = dri2_display_create_window_surface;
 927    dri2dpy->base.create_pixmap_surface = dri2_display_create_pixmap_surface;
 928 #ifdef HAVE_WAYLAND_BACKEND
 929    dri2dpy->base.wayland_bufmgr = &dri2_display_wayland_bufmgr;
 930 #endif
 931
 932    return &dri2dpy->base;
 933 }
 934
 935 #else /* GLX_DIRECT_RENDERING */
 936
 937 struct native_display *
 938 x11_create_dri2_display(Display *dpy,
 939                         const struct native_event_handler *event_handler)
 940 {
 941    return NULL;
 942 }
 943
 944 #endif /* GLX_DIRECT_RENDERING */